FUJITSU MAP3735FC User Manual
Page 57
4.1 Mounting Requirements
C141-E163
4-5
(3)
Limitation of bottom-mounting
Use all 4 mounting holes on the bottom face.
(4)
Environmental temperature
Temperature condition at installed in a cabinet is indicated with ambient temperature measured 3 cm
from the disk drive. At designing the system cabinet, consider following points.
•
Make a suitable air flow so that the DE surface temperature does not exceed 60°C.
•
Cool the PCA side especially with air circulation inside the cabinet. Confirm the cooling effect
by measuring temperature of specific ICs and the DE. These measurement results should be
within a criteria listed in Table 4.1.
•
Keeping the DE surface temperature at 50
°
C or lower, which is a condition for assuring an
MTBF of 1,200,000 hours, requires an air flow of 0.7 m/s.
Table 4.1
Surface temperature check point
No.
Measurement point
Criteria
1
Center of DE cover
60°C
2
Read channel LSI
88°C
3
VCM/SPM Driver
92°C
4
HDC
90°C
5
MPU
91°C
1
2
4
5
3
Figure 4.5
Surface temperature measurement points